CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Consolidated Statement of Comprehensive Income [Abstract]
Net income	$ (1.4)	$ 105.7	$ 178.6
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments, net	(9.8)	(1.8)	(2.6)
Unrealized losses on derivative contracts, net	(2.7)	(5.1)	(3.8)
Pension and postretirement liability adjustments, net	(78.8)	(86.6)	(7.7)
Amortization of prior service costs and actuarial losses, net	41.9	15.5	20.3
Total other comprehensive (loss) income, net of tax	(49.4)	(78.0)	6.2
Comprehensive (loss) income	$ (50.8)	$ 27.7	$ 184.8